Double-acting force-pump



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DOUBLE ACTING' FORGE PUMP.`

.Patented Sept. 8, 1885.

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DOUBLE ACTING FORGE PUMP.

No. 326,053. Patented-sept. a, `1885.y

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DAVID J. N YSEWAND-ER, OF NEW CARLISLE, OHIO.

DOUBLE-ACTING FORCE-PUMP.

SPECIFICATION forming part of Letters Patent No. 326,053, datedSeptember 8,1885.

Application filed May 19, 1885. (No model.) A

To @ZZ whom it may concern:

Be it known that I, DAVID J. NYsEwANDEn, a citizen of the United States,and a resident of New Carlisle, in the county of Clark and State ofOhio, have invented certain new and useful Improvements in Double-VActing. Force- Pumps; and I do hereby declare that the following is afull, clear, and exact description of the invention, which will enableothers skilled in the art to which it appertains to make and use thesame, reference being had to the accompanying drawings, which form apart of this specification.

My invention relates to that class of pumps known as double-actingforce-pumps, and it has for its objects greater simplicity ofconstruction, combined with increased efficiency.

in operation, the inner pumpcylinder being further provided with anautomatic device whichdrains the water from theV dischargepipe to apoint below the freezing-point without allowing any of the water toescape or waste.

To these ends my invention consists in the improved' construction andcombination of parts of a pump of the above 'described class, which willbe hereinafter fully described, and pointed out in the claims.

Referring to the annexed drawings, Figure l is a longitudinal verticalsectional View of my improved double-acting force-pump, Fig. 2 is atransverse sectional view taken on the plane indicated by line x x, 3and 4L are detail views, respectively, of the piston and theliftingbucket. y

The same letters of reference indicate corresponding parts in all thegures.

Referring to t-he several part-s by letter, A represents the outer orrnain cylinder, which is provided at its lower end with the end piece orcap, B, the central opening or inletport, BQ of which is closed by theinwardlyopening valve b, the operation of which will be hereinafterdescribed. The upper end of the cylinder A is covered by the end pieceor cap, C, having the central aperture at the point where the piston-rodI passes through the same, the cap C being further provided at one sideof the said central aperture lwith the screw-threaded recess c, for thereception of Fig. l, and Figs.V

the lower end of the pipe F', which forms a part of the air-chamber F,and has its upper end inserted in a similar screw-threaded recess, g, inthe lower side of the base G of the p ump-stock, therecess in the cap Cconnecting bya smallvertical aperture, c, with the air-chamber proper,which is formed by the space between the upper portion of the outercylinder and the inner cylinder, H.

H represents the auxiliary inner cylinder, which is secured at its upperend to the annular interior shoulder, c, of the cap C, the said cylinderbeing of `such a size that its capacity is equal to one-half of that ofthe outer cylinder, A, the main cylinder A being tapped at about itscenter at al, for connection with the lower end of the discharge-pipe A.

I indicates the piston rod, at the lower end of which is secured theliftingbucket K, (shown in detail in Fig. Ltot the drawings,) the saidbucket consisting of the metallic bracket K', to the upper portion ofwhich the lower end of the piston-rod issecured, the combined washer,plunger-packing,and valve K2, consisting of a single disk of leather,the center of which is cut around for nearly an entire circle,leavingsufficient connection with the washer proper to form a hinge, the valvethus formed being arranged toopen upward as the bucket descends, andthemetal ring or annular plate K, which is held in place by the screws K4,and, in conjunction with the metallic plate or ring, serves to' hold thelifting-bucket in position, thus forming a solid connection, and at thesame time leaving a large clear passage for the water. Thelower portionof the metal bracket K is formed in the shape of a ring, the lower faceof this metallic ring bearing against the upper face of the disk K2,forming the combined washer, plunger-packing, and valve, While its outerface or periphery is slightly beveled at k', to adapt it to rit againstthe inner face of the annular upwardly-turned flange k of the leatherdisk K2. the said lower ringshaped portion of the metallic bracket thusserving not only for a means of attachment of thesaid disk to thebracket, but also serves to brace and holdin itsoperative position theannular upwardly-turned flange of the said disk`,which ICO forms theplungerpacking and washer for the lifting-bucket, this arrangementobviaiing the necessity of employing an additional piece of metal forabracing-ring for the said upwardlyturned annular Yiiange,which it wouldbe necessary to employ if the lower portion of the metallic bracket werenot constructed in this peculiar manner.

L indicates the upper piston,which works within the inner cylinder, andwhich is secured upon the piston-rod at such a point that when thelifting-bucket is lowered to the bottom of the outer cylinder the saidpiston will be in close proximity to the bottom of the inner cylinder,H. The piston Lis composed of the following parts: A jam-nut, L', issecured upon the piston-rod I at a suitable point. Above this nut isplaced a metal sleeve, L2, upon the upper end of which bears astationary disk, L3, having the vertical apertures Zi, while above thisdisk is placed a leather washer, L, and above this the nut L5, forsecuring the whole in place, both the nut L5 and washer L'L beingprovided with the vertical apertures Z5 and Zt, which register with thevertical apertures Z3 of the stationary disk L3. Upon the sleeve L2slides a movable disk, L, of a sufficient diameter to cover theapertures of the stationary disk when elevated against the lower side ofthe stationary disk L3.

The operation of my improved pump is as follows: The water enters thelower portion of the outer cylinder, A, (which in very deep wells mayform a separate chamber and be connected to its upper portion by asuitable connecting-pipa) through the lower aperture or inlet-port B' ofthe same, opening the valve b as it enters. On the downstroke of thepistonrod the inlet-port B' is closed by the valve b,

and the water forces open the valve K2 of the lifting-bucket and passesabove the said bucket. On the upstroke of the piston-rod one half of thewater in. the lower portion of the outer ,cylinder enters the innercylinder, (the capacity of which, as before stated,is onehalf of that ofthe outer cylinder,) while the other half ofthe body of water which hasentered the outer cylinder passes up through the discharge-pipe underthe action of the lifting bucket. The pressure of the water as it entersthe inner cylinder forces the movable disk L up against the lower faceof the stationary disk L3, thereby closing the openings Z3 Z4 Z5, and onthe downstroke of the piston-rod the lower portion of the outer cylinderis again filled, as before described, while the piston L operates toforce the water from the inner cylinder up through the dischargepipe,thus causing a continuous flow of water from the spout.

The air-chamber proper, F, which is formed by the space between theupper part of the outer cylinder andthe inner cylinder, extendscompletely around the walls or sides of the cylinder, as clearly shownin Fig. 2 of the drawings, so that as the water passes upward it comesin direct contact with the air-cushion above, and is thus dischargedwithout any of the j ar or jerk which occurs when the airchamber islocated to one side alone of the eylinder, the circular air'chamberwhich surrounds the inner cylinder being entirely closed at its top, soas to preserve intact the circular air-cushion formed by the airsurrounding the inner upper cylinder, this arrangement causing theair-cushion to act more smoothly, evenly, and effectively than would bethe case if the air-chamber surrounding the inner upper cylinder were soconstructed as to admit ofthe water passing up through the said chamberat certain points, as it is forced up to the discharge-spout under thepressure ofthe pistons, as has heretofore been the case.

While the pump is in operation the disk L6 is forced up against thestationary disk L3, thereby closing the apertures Z3 Z* Z5, as beforedescribed, thus letting no water escape; but when the pump is not inoperation the movable disk L6 falls by its own weight away from thelower face of the perforated disk L down upon the jam-nut L', and thewater-passage through the piston L is thus left open. The water standingin the upper portion of the discharge-pipe will then, seeking its level,run down into the outer cylinder, the lower portion of which is lled bythe water rising through the opening B', and the water in the lowerportion of the outer cylinder thus rising will enter the inner cylinder,H, through the open lower end thereof, and will risc through theperforations of the upper piston, L, and pass above the same in theinner cylinder, the water being thus removed to a point below thefreezing-point, while at the same time no waste of water is allowedwhile the pump is in operation, thus forming an automatic raitrfreezingdevice.

llrom the foregoing description, taken in connection with theaccompanying drawings, the construction and operation of myimproveddouble-acting force-pump will be readily understood without requiringfurther explanation.

It will be seen that my improved pump is simple in construction, andtherefore ineX- pensive to manufacture and not liable to break or getout of order, while at the same time it is very efficient in itsoperation. The peculiar construction of the upper piston effectuallyprevents the freezing of the water in the pump.

Having thus described my invention, what I claim, and desire to secureby Letters Patent of the United States, is-

The combination, with the outer and inner cylinders and -the dischargepipe, of the pistonfrod having the lifting-bucket composed of the metalbracket having the annular lower portion formed integral therewith andadapted to brace and hold in its operative position the upwardlyextending flange of the leather disk, the combined washer,plunger-packing,

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and valve formed of a single Ypiece or disk` of l In testimony that Iclaim the foregoing as leather, and the metal ring and bindingmy own Ihave hereunto aixed my signature sorews, and further provided with theautoin presence of two Witnesses.` matie piston arranged to Work in theinner y 5 cylinder, and consisting of the stationary disk, DAVID J. NYSEWANDER.

the washer, and the upper binding-nut, provided with theregisteringapertures, and the Witnesses: movable disk adapted to slideupon the verti- J. N. WILEY, oai sleeve and prevented from falling toolow J. M. MCOAIN.

ro by the jamnut, substantially as set forth.

